The choice of fastener significantly affects both the…<The choice of fastener significantly affects both the appearance and the longevity of a blind-nailed clapboard installation. For cedar sidingNatural Stone Cladding Installation MethodsFor blind nailing, 8d or 10d ring-shank siding nails (2-1/2 to 3 inches long) provide the best holding power. The ring shank design increases withdrawal resistance by approximately 40% compared to smooth shank nailsDamp Proof Course, which is critical because bl
Nail spacing should follow a maximum of 24 inches on center along each clapboard, with nails driven at each stud location. Additional nails may be required at butt joints — typically one nail 1 inch from each side of the jointEverything You Need To Know About Anchoring In Masonry Structures Types Installation Anchorage Length And Strength 2, driven at the same blind-nail position. Nails should be driven at a slight upward angle (approximately 10 degrees) to increase withdrawal resistance and to ensure the nail head remains hidden beneath the overlapping course.
riven nail heads for holding force.
Nail spacing should follow a maximum of 24 inches on center along each clapboard, with nails driven at each stud location. Additional nails may be required at butt joints — typically one nail 1 inch from each side of the joint, driven at the same blind-nail position. Nails should be driven at a slight upward angle (approximately 10 degrees) to increase withdrawal resistance and to ensure the nail head remains hidden beneath the overlapping course.
Installation Sequence for Consistent Results
Proper blind nailing follows a specific sequence that ensures each course is correctly positioned before the next one conceals the fasteners. Begin at the bottom of the wall with the starter course, which is typically face-nailed since there is no lower course to conceal the fasteners. The starter course should extend 1 inch below the bottom edge of the sheathing to create a drip edge that directs water away from the foundation.
For the second and subsequent courses, follow this sequence: position the clapboard at the correct reveal, check for level across at least three stud bays, temporarily tack the board in place with a single nail at each end (driven in the area that will be covered), then drive the permanent blind nails at every stud. Remove the temporary tacks after the blind nails are set.
The final course at the top of the wall requires face nailing, as there is no overlapping course above. Plan the layout so that the top course is at least 4 inches wide to avoid splitting during face nailing. If the final reveal would leave a course narrower than 4 inches, adjust the reveal of the preceding courses proportionally.
Common Issues and Solutions
Several problems can arise during blind nailing that compromise either appearance or structural performance. Splitting is the most common issue, particularly near the ends of clapboards. To prevent splitting, pre-drill nail holes within 2 inches of board ends, especially in dry cedar during low-humidity conditions. Using a pneumatic nailer with adjustable depth control reduces splitting compared to hand driving.
Another frequent problem is nail pop, where the nail head rises above the surface as the cedar shrinks during dry weather. To minimize nail pop, use ring-shank nails and ensure the clapboards are at equilibrium moisture content (typically 12% for exterior cedar) before installation. Storing clapboards under cover for at least two weeks before installation allows them to acclimate to local conditions.
Gaps at butt joints develop when clapboards shrink differentially after installation. While some seasonal movement is inevitable, proper technique can minimize visible gaps. Cut butt joints with a slight back-bevel (about 2 degrees) so the tight fit is at the face, and leave a 1/16-inch gap at each joint to accommodate expansion. Caulk these gaps with a high-quality exterior-grade paintable caulk that matches the stain or paint color.
Tools for Efficient Blind Nailing
The right tools dramatically improve both speed and quality in blind-nailing operations. A pneumatic coil siding nailer is the professional’s choice, offering rapid-fire operation and consistent depth control. Look for a model with a adjustable depth-of-drive mechanism and a narrow nose that can access tight spaces between overlapping courses.
For hand nailing, a 16-ounce curved-claw hammer with a smooth face provides the best control. A nail set (1/16-inch tip) can be used to drive nail heads slightly below the surface in tight spots where a hammer face won’t fit. However, setting nails adds significant labor time — approximately 50% more than pneumatic fastening — making it practical only for small jobs or repairs.
A reveal gauge or story pole calibrated to the specific clapboard size and reveal ensures consistent nail placement across the entire wall. Mark the nail height on the story pole and transfer it to each clapboard before positioning. This simple step eliminates measuring errors that accumulate over a large wall surface.
Performance Comparison: Blind vs. Face Nailing
Blind nailing offers clear aesthetic advantages, but it also has performance characteristics that differ from traditional face nailing. Understanding these differences helps in selecting the right approach for each project.